Stock ownership
Ionis Pharmaceuticals, Inc.
- Ticker
- IONS
- CUSIP
- 462222100
- Held by
- 3 funds
- Combined value
- $179,066,182
+% bought more, −% sold down — each fund's last-quarter move (change in share count).
| Fund | Quarter | Last quarter | Value | % of fund |
|---|---|---|---|---|
| Baker Bros. Advisors position history | Q1 2026 | +14% | $153,763,820 | 0.88% |
| ARK Investment Management position history | Q1 2026 | −32% | $21,679,720 | 0.17% |
| Tudor Investment Corp position history | Q1 2026 | +1218% | $3,622,642 | 0.02% |